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Electrochemical investigation of a novel metalloporphyrin intercalated layered niobate modified electrode and its electrocatalysis on ascorbic acid |
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| Authors: | Xiaobo Zhang Mingyan Wang Dan Li Lin Liu Juanjuan Ma Junyan Gong Xujie Yang Xingyou Xu Zhiwei Tong |
| Institution: | 1. Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, China 2. Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, 222005, China 3. School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, China 4. SORST, Japan Science and Technology (JST), Saitama, Japan |
| Abstract: | Cationic iron (III) tetrakis-5, 10, 15, 20-(N-methyl-4-pyridyl) porphyrin (FeIIITMPyP) was intercalated into layered semiconductor KNb3O8 by ion-exchange method. The target product was characterized by XRD, Fourier transform infrared, UV–vis, and TGA. FeIIITMPyP forms an inclined monolayer between Nb3O8 ? nanosheets and endues the nanocomposite with excellent electrochemical catalytic activities. The target nanocomposite modified glass carbon electrode shows good electrocatalytic activities for the oxidation of ascorbic acid (AA); the catalytic mechanism was proposed. Differential pulse voltammetric technique was used for detection of AA in neutral aqueous solution; a detection limit of 4.2?×?10?5 M was obtained, and the modified electrode showed good reproducibility in electrochemical detection. |
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